Evaluation of Water Productivity of Plant Production and Livestock Production in an Experimental Watershed Located in Southern Brazil

Released on by Sofia Helena Zanella Carra
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  • Evaluation of Water Productivity of Plant Production and Livestock Production in an Experimental Watershed Located in Southern Brazil Book Detail

  • Author : Sofia Helena Zanella Carra
  • Release Date : 2023*
  • Publisher :
  • Genre :
  • Pages : 0
  • ISBN 13 :
  • File Size : 55,55 MB
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Evaluation of Water Productivity of Plant Production and Livestock Production in an Experimental Watershed Located in Southern Brazil by Sofia Helena Zanella Carra PDF Summary

Book Description: Englische Version: Water shortages caused by persistent and severe droughts and changes in rainfall patterns are expected to be more frequent and intense due to climate change, increasing water competition and posing food production at risk. Therefore, sustainable and resilient food systems are needed to meet the demand of a growing population. Plant production and animal husbandry account for 72% of the water withdrawn worldwide. Most water consumed in livestock production is for animal feed production. Water is also needed to provide drinking water and to clean and cool the stables. In this context, increasing agriculture and livestock water productivity (WP) is crucial, along with integrated management and governance of water resources. WP describes the ratio of output (e.g. kg milk) to water input (e.g. m3 evapotranspiration). Water input includes direct (e.g. water intake) and indirect (e.g., water for purchased feed) water use. WP calculations are used primarily in evaluating agricultural measures to improve rainfall and technical WP in livestock and crop production. Consistent methods are needed to increase WP and also to reduce the water-related environmental impact of livestock systems. Recently, the Food and Agriculture Organization of the United Nations (FAO), through the Livestock Environmental Assessment and Performance (LEAP) Partnership, launched reference guidelines for assessing water use in livestock production systems and supply chains. The FAO LEAP guidelines aim to understand the water flows on a farm scale and evaluate the contribution of livestock activities to water scarcity, supporting the identification of opportunities to reduce the potential water use impacts in this sector. This cumulative thesis presents the results of the first application of the FAO LEAP guidelines on farms located in Brazil. Three original publications were published in peer-reviewed journals. [...].

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Deficit Irrigation Practices

Deficit Irrigation Practices

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In the context of improving water productivity, there is a growing interest in deficit irrigation, an irrigation practice whereby water supply is reduced below